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  <title>Prepare a query for later execution</title>
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  <div id="layout-content"><div id="function.ingres-prepare" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ingres_prepare</h1>
  <p class="verinfo">(PECL ingres &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">ingres_prepare</span> &mdash; <span class="dc-title">Prepare a query for later execution</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ingres-prepare-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>ingres_prepare</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$query</code></span>
   ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>

  <p class="para rdfs-comment">
   Prepares a query for execution by <span class="function"><a href="ingres_execute.html" class="function">ingres_execute()</a></span>.
  </p>
  <p class="para">
   The query becomes part of the currently open transaction.  If
   there is no open transaction, <span class="function"><a href="ingres_query.html" class="function">ingres_query()</a></span>
   opens a new transaction. To close the transaction, you can 
   call either <span class="function"><a href="ingres_commit.html" class="function">ingres_commit()</a></span> to commit the changes
   made to the database or <span class="function"><a href="ingres_rollback.html" class="function">ingres_rollback()</a></span> to
   cancel these changes. When the script ends, any open transaction
   is rolled back (by calling
   <span class="function"><a href="ingres_rollback.html" class="function">ingres_rollback()</a></span>). You can also use
   <span class="function"><a href="ingres_autocommit.html" class="function">ingres_autocommit()</a></span> before opening a new
   transaction to have every SQL query immediately committed.
  </p>

  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <strong>Related Configurations</strong><br />
   <p class="para">
    See also the <a href="ingres.configuration.html#ini.ingres.describe" class="link">ingres.describe</a>,
    <a href="ingres.configuration.html#ini.ingres.scrollable" class="link">ingres.scrollable</a> and
    <a href="ingres.configuration.html#ini.ingres.utf8" class="link">ingres.utf8</a> directives in 
    <a href="ingres.configuration.html" class="link">Runtime Configuration</a>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.ingres-prepare-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">link</code></dt>

     <dd>

      <p class="para">
       The connection link identifier
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">query</code></dt>

     <dd>

      <p class="para">
       A valid SQL query (see the Ingres <em>SQL reference
       guide</em>) in the Ingres documentation.
       See the <a href="ingres-query.html#function.ingres-query.query" class="link">query</a>
       parameter in <span class="function"><a href="ingres_query.html" class="function">ingres_query()</a></span> for a list of SQL
       statements which cannot be executed using
       <span class="function"><strong>ingres_prepare()</strong></span>
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ingres-prepare-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   <span class="function"><strong>ingres_prepare()</strong></span> returns a query result identifier that
   is used with <span class="function"><a href="ingres_execute.html" class="function">ingres_execute()</a></span> to execute the query. To see 
   if an error occurred, use <span class="function"><a href="ingres_errno.html" class="function">ingres_errno()</a></span>, 
   <span class="function"><a href="ingres_error.html" class="function">ingres_error()</a></span>, or 
   <span class="function"><a href="ingres_errsqlstate.html" class="function">ingres_errsqlstate()</a></span>.
  </p>
 </div>




 <div class="refsect1 seealso" id="refsect1-function.ingres-prepare-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="ingres_unbuffered_query.html" class="function" rel="rdfs-seeAlso">ingres_unbuffered_query()</a> - Send an unbuffered  SQL query to Ingres</span></li>
    <li class="member"><span class="function"><a href="ingres_fetch_array.html" class="function" rel="rdfs-seeAlso">ingres_fetch_array()</a> - Fetch a row of result into an array</span></li>
    <li class="member"><span class="function"><a href="ingres_fetch_assoc.html" class="function" rel="rdfs-seeAlso">ingres_fetch_assoc()</a> - Fetch a row of result into an associative array</span></li>
    <li class="member"><span class="function"><a href="ingres_fetch_object.html" class="function" rel="rdfs-seeAlso">ingres_fetch_object()</a> - Fetch a row of result into an object</span></li>
    <li class="member"><span class="function"><a href="ingres_fetch_row.html" class="function" rel="rdfs-seeAlso">ingres_fetch_row()</a> - Fetch a row of result into an enumerated array</span></li>
    <li class="member"><span class="function"><a href="ingres_commit.html" class="function" rel="rdfs-seeAlso">ingres_commit()</a> - Commit a transaction</span></li>
    <li class="member"><span class="function"><a href="ingres_rollback.html" class="function" rel="rdfs-seeAlso">ingres_rollback()</a> - Roll back a transaction</span></li>
    <li class="member"><span class="function"><a href="ingres_autocommit.html" class="function" rel="rdfs-seeAlso">ingres_autocommit()</a> - Switch autocommit on or off</span></li>
    <li class="member"><span class="function"><a href="ingres_set_environment.html" class="function" rel="rdfs-seeAlso">ingres_set_environment()</a> - Set environment features controlling output options</span></li>
    <li class="member"><span class="function"><a href="ingres_errno.html" class="function" rel="rdfs-seeAlso">ingres_errno()</a> - Get the last Ingres error number generated</span></li>
    <li class="member"><span class="function"><a href="ingres_error.html" class="function" rel="rdfs-seeAlso">ingres_error()</a> - Get a meaningful error message for the last error generated</span></li>
   </ul>
  </p>
 </div>



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